rpearlberg
Well-known member
Installing a new light switch timer. My old switches used a ground wire, but the new timer doesn't have a place for a ground wire. What should I do with the ground wire in the box?
Stuff it back inside the box.![]()
Is that timer UL listed?
Does it require a neutral?
See the black wire that ties into the other black with the wirenut on them, thats your hot wire, the single black is your load (light/fan ext) swap your wires on your switchIt does, and I have it connected....I think.
I have a hot, load, and then I had this neutral connected inside that cap (just removed to see what else I should try).
Nothing is coming up on the screen for the timer switch....
It's possible I have the hot and load reversed....maybe.
See the black wire that ties into the other black with the wirenut on them, thats your hot wire, the single black is your load (light/fan ext) swap your wires on your switch
Your single black wire going into the box is your load wire, tie it to the blue wire on your switch.
Or is it? I cant tell. Do you have a meter/voltage tester?
Which wire do the instructions say is line and which 1 is load?![]()
Which wire do the instructions say is line and which 1 is load?![]()
If it doesn't have a ground screw on it, there should be a metal ******** it so that any exposed metal surfaces like the screws for the plate (or if using a metal plate) will be automatically bonded to ground. If you have a metal box, the strap will thus be bonded to ground. If a plastic box, there should be a metal strap in it that also bonds the switch to ground.
If the timer has a ground screw, attach the ground wire. If not, tuck the wire into the rear of the box. If romex or BX, the incoming & outgoing ground wires should be connected together and also connected to the ground screw in the box.
AFAIK, a residential grade 120V 15A toggle/rocker switch normally doesn't have with a grounding screw and I have never seen one. Sometimes wiring devices like a timer or a 3 or 4-way switch will have them. Industrial, spec. or hospital grade switches have grounding screws though for reliability/safety reasons.
Can you post a pic of the timer and/or the make & model no.? Some timers require a neutral connection and depending on how your light and switch are wired, will not work.
It's the Honeywell RPLS740B
I just got one of them installed and it seems to work. However, I still can't get the one I posted a picture of connected correctly. I taped/capped the ground and shoved into the back of the box.
Hi,
I just looked at the picture and it looks like the neutrals are connected with a grounding type wire nut................Change out that wire nut to a standard wire nut
That timer needs it own power source to be powered up because it is a timer and not a switch...The neutral must be connected from the switch or there is no circuit
Just sayin'
Bob
Looks like a plain old tan wirenut to me,the ground wire nuts that you can feed the wire through are green.Hi,
I just looked at the picture and it looks like the neutrals are connected with a grounding type wire nut................Change out that wire nut to a standard wire nut
That timer needs it own power source to be powered up because it is a timer and not a switch...The neutral must be connected from the switch or there is no circuit
Just sayin'
Bob

Looks like a plain old tan wirenut to me,the ground wire nuts that you can feed the wire through are green.![]()
If you look close at the picture, you can see a bare ground sneaking "behind" the neutral wires at this camera angle. It then reappears from behind the tan wire nut.
BTW, it is kind of pointless to tape and cap a bare ground. It could have been shoved into the back of the box just as it was!